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Relion 630 Series Protection Relays Cybersecurity Advisory

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This cybersecurity advisory from ABB details two vulnerabilities (CVE-2022-3353 and CVE-2023-4518) affecting Relion 630 series protection relays (REF630, REG630, REM630, RET630). The flaws could allow an attacker to stop new IEC 61850 MMS client connections or cause the device to restart, with firmware updates provided as remediation.

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